diff options
Diffstat (limited to 'util-linux/e2p/fgetflags.c')
-rw-r--r-- | util-linux/e2p/fgetflags.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/util-linux/e2p/fgetflags.c b/util-linux/e2p/fgetflags.c new file mode 100644 index 0000000..6db729e --- /dev/null +++ b/util-linux/e2p/fgetflags.c @@ -0,0 +1,92 @@ +/* + * fgetflags.c - Get a file flags on an ext2 file system + * + * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr> + * Laboratoire MASI, Institut Blaise Pascal + * Universite Pierre et Marie Curie (Paris VI) + * + * This file can be redistributed under the terms of the GNU Library General + * Public License + */ + +/* + * History: + * 93/10/30 - Creation + */ + +#if HAVE_ERRNO_H +#include <errno.h> +#endif +#if HAVE_UNISTD_H +#include <unistd.h> +#endif +#include <sys/types.h> +#include <sys/stat.h> +#if HAVE_EXT2_IOCTLS +#include <fcntl.h> +#include <sys/ioctl.h> +#endif + +#include "e2p.h" + +#ifdef O_LARGEFILE +#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE) +#else +#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK) +#endif + +int fgetflags (const char * name, unsigned long * flags) +{ + struct stat buf; +#if HAVE_STAT_FLAGS && !(APPLE_DARWIN && HAVE_EXT2_IOCTLS) + + if (stat (name, &buf) == -1) + return -1; + + *flags = 0; +#ifdef UF_IMMUTABLE + if (buf.st_flags & UF_IMMUTABLE) + *flags |= EXT2_IMMUTABLE_FL; +#endif +#ifdef UF_APPEND + if (buf.st_flags & UF_APPEND) + *flags |= EXT2_APPEND_FL; +#endif +#ifdef UF_NODUMP + if (buf.st_flags & UF_NODUMP) + *flags |= EXT2_NODUMP_FL; +#endif + + return 0; +#else +#if HAVE_EXT2_IOCTLS + int fd, r, f, save_errno = 0; + + if (!stat(name, &buf) && + !S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode)) { + goto notsupp; + } +#if !APPLE_DARWIN + fd = open (name, OPEN_FLAGS); + if (fd == -1) + return -1; + r = ioctl (fd, EXT2_IOC_GETFLAGS, &f); + if (r == -1) + save_errno = errno; + *flags = f; + close (fd); + if (save_errno) + errno = save_errno; + return r; +#else + f = -1; + save_errno = syscall(SYS_fsctl, name, EXT2_IOC_GETFLAGS, &f, 0); + *flags = f; + return (save_errno); +#endif +#endif /* HAVE_EXT2_IOCTLS */ +#endif +notsupp: + errno = EOPNOTSUPP; + return -1; +} |